Embodiments herein are generally directed to expandable spinal implants, systems, apparatuses, and components thereof that can be used in spinal fusion and/or stabilization procedures, as well as methods of installation. The expandable spinal implants may be configured for lateral insertion.

A trial neck piece for a joint endoprosthesis is designed for temporary arrangement on a separate shaft body (60) that is insertable into a tubular bone (9). It comprises a fastening region (12) which can be plugged temporarily onto a head part (61) of the shaft body (60) by means of a plug connection (l l), and a neck region (IO) for receiving a joint element (19) of the joint endoprosthesis. The trial neck piece (I) is designed as a separate, plug-on attachment piece which, with its fastening region (12), can be plugged with form-fit engagement onto the head part (61) and locked. A latching device (2) is provided which comprises a plurality of latching stages for different height stages of the trial neck piece (I). The invention thus makes available an easily attachable trial neck piece which can be arranged in a defined manner in different height positions in order, on the one hand, to obtain a secure and defined arrangement and, on the other hand, to permit the setting of different heights. The invention further relates to an arrangement with a trial neck piece and with an excavating tool, in particular a reamer, and to an instrument set comprising a trial neck piece and an insertion instrument.

A spinal distraction system, according to one aspect, includes an adjustable spinal distraction rod comprising first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members. The system includes an anchor rod configured for mounting to a bone of a subject, the anchor rod having one or more spring-biased tabs disposed at one end thereof, and a connector having first end and a second end, the first end having a receiving cup configured for detachable mounting on the anchor rod, wherein the one or more spring-biased tabs are configured to engage with an inner surface of the receiving cup, the connector having a second end operatively coupled to an end of a first member and wherein the second member is configured for mounting to a second bone of a subject.

Methods and devices are disclosed for treating the vertebral column. An implant for treating the spine is provided comprising at least two articulations between the spacer and the bone facing surface of the fixation plate. Another implant for treating the spine is also provided, comprising two or more fixation plates attached to a spacer with two or more articulations, wherein the fixation plates are independently movable.

A steerable expandable implant including a base member, an adjustable member coupled to the base member, the adjustable member movable between a collapsed position and an expanded position, a pivot member rotatably received by the base member and configured to receive a tool such that the tool and the pivot member are rotatable relative to the base member between a first position and a second position, wherein the pivot member is translationally fixed relative to the base member, and a first control member received by the base member, wherein manipulation of the first control member causes the adjustable member to move between the collapsed position and the expanded position.

An orthopaedic fixation assembly for prosthetic biologic attachment. The orthopaedic fixation assembly may include a main body with a longitudinally-extending stem having a proximal end, a distal end, and a cavity body. An anchor plug may be configured to be received within the stem cavity, and securable thereto via complementary mating surfaces. A spindle structure may be fixedly attached to the proximal end of the longitudinally-extending stem and protrude outwardly therefrom such that a portion of the structure extends externally beyond the resected cavity of the bone that may prevent rotational motion of the spindle. The spindle structure may have at least one compliant biasing member configured to apply a compressive force to the surrounding bone. A porous coating may be at the juncture between stem and spindle structure, on the spindle, and the splines and anti-rotation chocks, improving the initial stability of the implant and facilitating long-term bone ingrowth.

An interbody at least one surface including a plurality of members that are independently configured and dimensioned to move from a first position to a second position is disclosed.

An expandable interbody spacer for placement between adjacent vertebrae having two or more upper and lower endplates having compound-angle linear rods coupled to compound-angle bores configured to couple with the compound-angle linear rods a drive means having corresponding compound-angle slots, ramps or rails configured to slidingly engage the compound-angle slots, ramps or rails of the two or more upper and lower endplates, wherein movement of the drive means in a first direction moves the two or more upper and lower endplates away from each other both vertically and horizontally to expand both a height and a width of the expandable interbody spacer from a collapsed state to an expanded state.

An expandable intervertebral fusion implant, including an inferior component, including a first top surface, a first bottom surface, a first end, a second end, and a first hole including a first portion and a second portion, a superior component, including a second top surface, a second bottom surface, a third end, and a fourth end, and an expansion mechanism including a flexible shaft arranged in the first hole, the flexible shaft including a fifth end, a sixth end connected to the first bottom surface, and a first plurality of teeth.

An expandable intervertebral fusion implant, including an inferior component, including a first top surface, a first bottom surface, a first end including a first worm rotatably arranged therein, and a second end including a second worm rotatable arranged therein, a superior component, including a second top surface, a second bottom surface, a third end, and a fourth end, and a first expansion mechanism including a first screw, the first screw including a first bottom end connected to the inferior component and a first top end connected to the superior component, wherein as the first worm is rotated in a first circumferential direction, the first screw rotates in a second circumferential direction and the superior component is displaced relative to the inferior component.